Improvement in lamp-burners



Patented March 16,1869.

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. i @D tant intent l JOSEPH BELL'ALEXANDER, OF WASHINGTON, DISTRICT OF4 COLUMBIA.

.Letters Patent No. 87,898, dotted -Mafrch 16, 1869.

IMPROVEMENT IN LAMP-BURNERS.

The Schedule referred to in these Letters Patent and making part of the same.

To allfwhom it ma/y concern:

Be it kuown that I, JOSEPH BELL ALEXANDER, of Washington, in the county of Washington, and District of Columbia, have invented a new Improvement in Lamp-Burners andI do hereby declare the following,

`when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and

which said drawings constitute part of this specification, andrepresent, in-

Figure 1, a side viewin perspective;

Figure 2, a'vertical section Figure 3,' the deflector in perspective Figure 4, the spring-holder in perspective; Figure 5, the helicalspring in perspective;

Figure 6, the draught-plate, with wick-tube and casing inserted, in perspective;

Figure 7, a side View of the draughtplate, with the wick-tube inserted, in perspective;

Figure 8, the wick-tube and its casing, as separated from Athe draught-plate, in perspective; and in l Figure 9, a cap with indentures on its sides, formlng a part of the casing of the wick-tube, when in union with the hase, in perspective.

Similar letters of reference denote like parts.-

This invention relates to an improvement 'in that class of burners designed for. burning kerosene and similar oils; and consists in the peculiar construction of the burner, and the arrangement for the support of the chimney.

To .enable others to construct my improvement, I will proceed to describe the same as illustrated in the accompanying drawings. l

By refen'in g to the letters of reference, it will be seen that they denote, as follows:

A, a circular sleeve, struck up in the centre of the draught-plate B, with the inward-projecting teeth O O,

. to admit and adjust the wick-tube, with its casing E and D; y

B,the draught-plate.

C, the de'liector.

D, the base, on which is cut the usual screw.

E, the cap enclosing the Vwick-tube and wick-adj uster, struck upgwith the indentures N N, to correspond with the teeth O O, and made to slip easily. into the sleeve A.

F F, a' circle of air-holes in. the draughtfplate B, to keep the chimney col, and to supply a certain quantity of air to the ame from the outer 'side of the deliector C. 1

lGr, a groove formed in the ling R, for the purpose of holding a helical spring, in which said spring fixes itself by its own contraction.

H H, several circles of air-holes in the draughtplate B, to supply sucient air directly' through the dellector to the flame.

I l, a number of slots in the draught-plate B, to ad mit the tongues L L, by which the spring-holder, or ring, R is made fast to saiddraught-plate.

M M, several slots in the top rim of the ring R, to admit the tongues K K, by which the dellector C is made fast to 'said ring R.

N N, two indentures struck in the cap E, to correspond with the inward projections O O of the sleeve A. P, a ilanch on the periphery-oi' the draught-plate B, as a rest for the base ofthe chimney.

R, a grooved ring, or spring-holder, which comes be-y tween the detlector and draught-plate.'

S, a helix, of spring-wire, with the ends united, so as and at opposite points on this band A, I should strike inwardly two projections O O and I should also punch several slots, I I, to admit the tongues L L L.

I should then make a cylinder, or ring, like ig.4, with the groove G, the slots in the upper rim M M M, and the downward-projecting tongues L L L, which tongues must correspond in number and positionl with the Slots I I I in the draught-plate.

Inow insert the tongues L L L into the slots I l I, and turn their points with a stroke of a die, as seen in fig. 2, thus attaching iirmly the ring R to the plate B.

I then make a deiiector like that lshown in iig. 3, With thev tongues K KK projecting downward, which must 'correspond in number and position with the slots M M M.

I nowinsert the tongues KKKinto the slots M MM, and turn their points with the stroke of a die, as seen in fig 2, thus attaching rmly the dellector C to the ring R..

I then make a spring-wire helix of sulcient length, and unite the ends with solder, or otherwise, and slip it over the deector C, allowing itto contract into the groove G.

This part of the burner is now finished. l

I their strike up a base, D, in the usual form, aud cut a screw on the shank, in the usual manner, and

through-the base of the'sliank, I cut a slot, for the in4 sertion off the foot of the wick-tube.

In this base, D, I also punch holes, to admit the axle of the wick-adjuster, which adjuster I now make 'and xin place.

I thenmake the cap E, with the indentures N N at opposite points, which must correspond with and fit the slot Q in the cap E, and also through the slot in the bottom of the base, D, the wick-adj uster being in place, until the knots U U are in contact with the top of the cap E.

I now spread the foot of the wick-tube with -a die, and all the parts are joined firmly together, as seenin fig. 8.

rllhis may now be screwed into the collar of a lamp,

land the plate, B with its ring R, spring S, and dcilector C, attached together, may be slipped on or offthe cap.

in the market.

rlhe action of the spring S is peculiar. AA helical spring, with its convolutions twisted throughlittle holes for the purpose, punched around the edge of an elevated deector, has been used as a support for a glass chimney on a lamp-burner, and being held by its continuous attachment to the edge of the deflector, it does not require its ends to be united, while its convolutions yield in a direct line from the circumference toward the centre, by turning backward under the edge of the deiiector, thus displaying the weakest'powe'r of the spring, and requiring to be well elevated to sustain the chim-v ney in its place.

My spring, having its internal circle heldA firmly against an unyielding ring of metal, by its own elasticity, cannot recede in a direct line from the pressure of the chimney; consequently its convolutious assume, under pressure of the chimney,an oblique direction, thus giving great power to the spring, and firmness in the support of the chimney.

the burner, with the wick-tube, is kept cool by the free flow of air through the holes H H.

The advantages of this improvement are as follows:

It is vsymmetrical in form it admits of a very short wick-tube, it iseasy to clean, the spring being slipped off and on at will; and it can be trimmed and lighted with facility, as the plate B, holding the chimney, slips readily off and-on vthe cap E, being adjusted by the projections O O in plate B, slipping into the notches N N in cap E.

'I do not claim, broadly, the use of a helical spring, for the purpose of supporting a chimney upon a lampburner.

What I do claim as new, and as my invention, and desire to secure by-Letters Patent, is

1. The use of a helical spring to hold the chimney on lamp-burner, when the said spring has its, ends united, so as to form a ring, and is attached to the burner by its elasticity only, and when its inner circle rests against an unyielding-ba'ck, causing the convolutions of' said spring to assume an oblique direction under pressure, the chimney being put on by a twisting motion',I substantially as described, and for the purpose set forth.

2. The cylindrical ring R, with its groove G, its slots M M M, and its tongues L L L, substantially as described, land for the purpose set forth.

3. Thev helical spring S, in combination with the groove G, substantially as described, and for the purpose set forth.

4. The attachmentl of a circular helical spring to a lamp-burner, bythe contraction of the spring only, its nner circle resting against au unyielding base, and grasping the chimney at or near its lower rim, substantially as described, aud'for the purpose set forth.

5. The combination of the cylindrical-ring R, and

its groove G and spring S, with the delector C and draught-plate B, ltogether with the wick-tube T, cap E, base, D, and'any of the wick-adjusters in use, when arranged together, substantially as described, and for the purpose set forth.

J. B. ALEXANDER.

' Witnesses:

HENRY WATERMAN,

H.- F. READ. 

